ZedneWeb → TDL
TDL is an RDF vocabulary for describing threaded discussions.
The namespace for TDL 3 is
<http://www.eyrie.org/~zednenem/2002/web-threads/>
. In this document,
we will refer to the TDL namespace using the prefix tdl:
. Thus,
tdl:Post
is an abbeviation for the term
<http://www.eyrie.org/~zednenem/2002/web-threads/Post>
.
Earlier versions of TDL declare many terms in the TDL namespace which are not part of TDL 3. Agents using TDL 3 are only required to understand those terms which are defined by the TDL 3 schema and described in this document.
The schema is currently available in two formats:
Of these, the Turtle version has been constructed for human- and machine-readability. The RDF/XML version is generated automatically from Turtle version.
Documents using TDL 3 are encouraged to import the schema using
owl:imports
.
tdl:Post
Status | Stable |
---|---|
Disjoint with | tdl:Thread |
Outgoing |
tdl:discusses ,
tdl:inThread ,
tdl:respondsTo ,
tdl:respondsNegativelyTo ,
tdl:respondsPositivelyTo
|
Incoming |
tdl:respondsTo ,tdl:respondsNegativelyTo ,tdl:respondsPositivelyTo
|
tdl:Thread
Status | Testing |
---|---|
Disjoint with | tdl:Post |
In range of |
tdl:inThread
|
tdl:discusses
Status | Unstable |
---|---|
Type | Object property |
Domain | tdl:Post |
Super-properties |
tdl:follows ,
tdl:mentions
|
This is a stronger
connection than tdl:mentions
by itself; it indicates that the post
provides information about or an opinion on the resource. For
example, a post which includes TDL in a list of projects relating to
discussion threads would be related with tdl:mentions
, while a post
which explains why TDL is superior/inferior to some other system
would be related with tdl:discusses
.
The sense of tdl:discusses
overlaps somewhat with
tdl:respondsTo
. Where
appropriate, both may be used. As a rule, a post which responds to
another post addresses the ideas of the earlier post, whereas one
which discusses the earlier post is addressing the post itself
(perhaps complaining about its grammar or noting a quirk of its
author).
tdl:discusses
is probably a sub-property of
foaf:topic
.
tdl:follows
Status | Testing |
---|---|
Type | Transitive object property |
Sub-properties |
tdl:mentions ,
tdl:discusses ,
tdl:respondsTo ,
tdl:respondsPositivelyTo ,
tdl:respondsNegativelyTo
|
Relates a resource to another resource which precedes it chronologically. More precisely, it indicates that the object resource does not follow the subject (see below). This is the weakest way to relate posts in a thread, but in cases such as linear message boards or e-mail discussions, it may be all that's available.
In certain media, it is possible for posts to be modified after their
initial creation, which can lead to cases where post B refers to post A,
which is subsequently modified to refer back to post B. Because tdl:mentions
is a sub-property of tdl:follows
, we must allow A to follow B and B to
follow A simultaneously. A circle of tdl:follows
relationships effectively
indicates that the resources are at roughly the same place
chronologically. (@@REF examines the issues circular
relationships raise and techniques to avoid them.)
It is sometimes possible to derive tdl:follows
from creation dates. A
mailing list archive, for example, knows the chronological order of its
posts but may not have explicit clues as to which posts mention or
respond to others. This is discouraged for distributed forums such as
usenet and the blogosphere, as there is no centralized clock.
tdl:inThread
Status | Testing |
---|---|
Type | Object property |
Domain | tdl:Post |
Range | tdl:Thread |
tdl:mentions
Status | Testing |
---|---|
Type | Object property |
Super-property | tdl:follows |
Sub-properties |
tdl:discusses ,
tdl:respondsTo ,
tdl:respondsPositivelyTo ,
tdl:respondsNegativelyTo
|
tdl:respondsTo
Status | Testing |
---|---|
Type | Object property |
Domain | tdl:Post |
Range | tdl:Post |
Super-properties |
tdl:follows ,
tdl:mentions
|
Sub-properties |
tdl:respondsPositivelyTo ,
tdl:respondsNegativelyTo
|
tdl:respondsNegativelyTo
Status | Unstable |
---|---|
Type | Object property |
Domain | tdl:Post |
Range | tdl:Post |
Super-properties |
tdl:follows ,
tdl:mentions ,
tdl:respondsTo
|
tdl:respondsPositivelyTo
Status | Unstable |
---|---|
Type | Object property |
Domain | tdl:Post |
Range | tdl:Post |
Super-properties |
tdl:follows ,
tdl:mentions ,
tdl:respondsTo
|